Electric-powered headrest

Abstract

Disclosed is an electric-powered headrest comprising: a plate-shaped base which is fixed to the upper portion of a stay rod and has a bent part formed therein, the bent part having opposite ends upwardly bent; a main bracket which has a coupling part formed on the lower end thereof to be coupled to the bent part of the plate-shaped base and pivots back and forth around the coupling part; an operating part arranged in a space part formed in the main bracket; and a lead screw which has one end coupled to the main bracket and the other end coupled to the operating part, and moves back and forth according to an operation of the operating part.

The invention claimed is: 
     
       1. An electric-powered headrest comprising:
 a plate-shaped base rigidly fixed to an upper portion of a stay rod and having a bent part formed therein, the bent part having opposite ends upwardly bent; 
 a main bracket having a coupling part formed on a lower end thereof to be coupled to the bent part of the plate-shaped base, wherein a space is formed in the main bracket, and the main bracket is configured to pivot back and forth around the coupling part; 
 an operating part arranged in the space; and 
 a lead screw coupled at a first end thereof to the main bracket and coupled at a second end thereof to the operating part, so that the lead screw moves back and forth by an operation of the operating part. 
 
     
     
       2. The electric-powered headrest according to  claim 1 , wherein the lower end of the main bracket is coupled to the plate-shaped base via a pin to pivot back and forth. 
     
     
       3. The electric-powered headrest according to  claim 1 , further comprising:
 a bent plate-shaped side bracket provided on a side of the main bracket, the bent plate-shaped side bracket configured to support a headrest pad. 
 
     
     
       4. The electric-powered headrest according to  claim 1 , wherein a hinge shaft is formed on an upper portion of a front of the main bracket to laterally traverse the main bracket, the first end of the lead screw being rotatably coupled to the hinge shaft. 
     
     
       5. The electric-powered headrest according to  claim 1 , wherein the main bracket comprises a front bracket provided on a front side thereof and a rear bracket provided on a rear side thereof. 
     
     
       6. The electric-powered headrest according to  claim 5 , wherein at least one link is provided on upper portions of the front and rear brackets to traverse the front and rear brackets respectively, and the at least one link is coupled to the front and rear brackets, respectively, and configured to pivot the front and rear brackets back and forth around the at least one link. 
     
     
       7. The electric-powered headrest according to  claim 1 , wherein the operating part comprises a driving part configured to generate power, and a gear part coupled to a rotating shaft of the driving part and having a gear formed thereon, so that the gear of the gear part engages with threads of the lead screw to allow the lead screw to move back and forth.